What is the Greatest Common Factor of 63615 and 63621?

Greatest common factor (GCF) of 63615 and 63621 is 3.

GCF(63615,63621) = 3

We will now calculate the prime factors of 63615 and 63621, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 63615 and 63621.

How to find the GCF of 63615 and 63621?

We will first find the prime factorization of 63615 and 63621. After we will calculate the factors of 63615 and 63621 and find the biggest common factor number .

Step-1: Prime Factorization of 63615

Prime factors of 63615 are 3, 5, 4241. Prime factorization of 63615 in exponential form is:

63615 = 3¹ × 5¹ × 4241¹

Step-2: Prime Factorization of 63621

Prime factors of 63621 are 3, 7069. Prime factorization of 63621 in exponential form is:

63621 = 3² × 7069¹

Step-3: Factors of 63615

List of positive integer factors of 63615 that divides 63615 without a remainder.

1, 3, 5, 15, 4241, 12723, 21205

Step-4: Factors of 63621

List of positive integer factors of 63621 that divides 63615 without a remainder.

1, 3, 9, 7069, 21207

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 63615 and 63621. The biggest common factor number is the GCF number.
So the greatest common factor 63615 and 63621 is 3.

Also check out the Least Common Multiple of 63615 and 63621